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-rw-r--r--hw/virtio/virtio-mmio.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/hw/virtio/virtio-mmio.c b/hw/virtio/virtio-mmio.c
index 88cf994b97..4bd29533f3 100644
--- a/hw/virtio/virtio-mmio.c
+++ b/hw/virtio/virtio-mmio.c
@@ -151,6 +151,9 @@ static uint64_t virtio_mmio_read(void *opaque, hwaddr offset, unsigned size)
}
return proxy->host_features;
case VIRTIO_MMIO_QUEUENUMMAX:
+ if (!virtio_queue_get_num(vdev, vdev->queue_sel)) {
+ return 0;
+ }
return VIRTQUEUE_MAX_SIZE;
case VIRTIO_MMIO_QUEUEPFN:
return virtio_queue_get_addr(vdev, vdev->queue_sel)